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A first paleomagnetic and rock magnetic investigation of calcareous nodules from the Chinese Loess Plateau

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Abstract

A detailed paleomagnetic and rock magnetic investigation was carried out on calcareous nodule layers embedded in the loess-paleosol sequences near Baoji city, southern Chinese Loess Plateau. The anisotropy of low-field magnetic susceptibility confirms that calcareous nodules retain the primary sedimentary fabric of original deposits. Rock magnetic properties demonstrate that calcareous nodules have the same mineralogy and grain sizes as loess-paleosol deposits. Characteristic remanent magnetizations of calcareous nodules have directions consistent with those of adjacent loess and paleosol deposits. The Punaruu event, previously found from loess deposits in the upper part of loess unit L13 in Weinan, southern Chinese Loess Plateau, is observed at the corresponding stratigraphic level in the calcareous nodule layer. These observations indicate that the calcareous nodule layers preserve primary remanent magnetizations of original deposits before calcification, and that they can contribute to paleomagnetic studies in the Chinese Loess Plateau.

References

  1. Biswas, D. K., M. Hyodo, Y. Taniguchi, M. Kaneko, S. Katoh, H. Sato, Y. Kinugasa, and K. Mizuno, Magnetostratigraphy of Plio-Pleistocene sediments in a 1700-m core from Osaka Bay, southwestern Japan and short geomagnetic events in the middle Matuyama and early Brunhes chrons, Palaeogeogr., Palaeoclimatol., Palaeoecol., 148, 233–248, 1999.

  2. Chen, J., J. F. Ji, G. Qiu, and H. Y. Lu, Geochemical studies on the intensity of chemical weathering in Luochuan loess sequence, China, Sci. in China (D), 41, 235–241, 1998.

  3. Day, R., M. Fuller, and V. A. Schmidt, Hysteresis properties of titanomagnetites: Grain size and compositional dependence, Phys. Earth Planet. Inter., 13, 260–267, 1977.

  4. Deng, C. L., R. X. Zhu, K. L. Verosub, M. J. Singer, and N. J. Vidic, Mineral magnetic properties of loess/paleosol couplets of the central loess plateau of China over the last 1.2 Myr, J. Geophys. Res., 109, B01103, doi: 10.1029/2003JB002532, 2004.

  5. Evans, M. E. and F. Heller, Magnetism of loess/paleosol sequences: Recent developments, Earth-Sci. Rev., 54, 129–144, 2001.

  6. Fang, X. M., J. J. Li, R. Van der Voo, C. Mac Niocaill, R. X. Dai, R. A. Kemp, E. Derbyshire, J. X. Cao, J. M. Wang, and G. Wang, A record of the Blake event during the last interglacial paleosol in the western Loess Plateau of China, Earth Planet. Sci. Lett., 146, 73–82, 1997.

  7. Guo, B., R. Zhu, F. Florindo, Z. Ding, and J. Sun, A short, reverse polarity interval within the Jaramillo subchron: Evidence from the Jingbian section, northern Chinese Loess Plateau, J. Geophys. Res., 107, 2124, doi:10.1029/2001JB000706, 2002.

  8. Guo, Z. T., W. F. Ruddiman, Q. Z. Hao, Y. S. Qiao, R. X. Zhu, S. Z. Peng, J. J. Wei, B. Y. Yuan, and T. S. Liu, Onset of Asian desertification by 22 Myr ago inferred from loess deposits in China, Nature, 416, 159–163, 2002.

  9. Heller, F., X. M. Liu, T. S. Liu, and T. C. Xu, Magnetic susceptibility of loess in China, Earth Planet. Sci. Lett., 103, 301–310, 1991.

  10. Heslop, D., J. Shaw, J. Bloemendal, J. Chen, J. Wang, and E. Parker, Submillennial scale variations in East Asian monsoon systems recorded by dust deposits from the North-Western Chinese Loess Plateau, Phys. Chem. Earth (A), 24, 785–792, 1999.

  11. Kirschvink, J. L., The least-squares line and plane and the analysis of palaeomagnetic data, Geophys. J. R. Astron. Soc., 62, 699–718, 1980.

  12. Liu, Q., S. K. Banerjee, M. J. Jackson, F. Chen, Y. Pan, and R. Zhu, An integrated study of the grain-size-dependent magnetic mineralogy of the Chinese loess/paleosol and its environmental significance, J. Geophys. Res., 108, 2437, doi:10.1029/2002JB002264, 2003.

  13. Liu, T. S., Loess and the Environment, China Ocean Press, Beijing, 251 pp., 1985.

  14. Liu, X. M., J. Shaw, T. S. Liu, F. Heller, and B. Y. Yuan, Magnetic mineralogy of the Chinese loess and its significance, Geophys. J. Int., 108, 301–308, 1992.

  15. Lowrie, W., Identification of ferromagnetic minerals in a rock by coercivity and unblocking temperature properties, Geophys. Res. Lett., 17, 159–160, 1990.

  16. Maher, B. A. and R. Thompson, Paleoclimatic significance of the mineral magnetic record of the Chinese loess and paleosols, Quat. Res., 37, 155–170, 1992.

  17. Pan, Y. X., R. X. Zhu, J. Shaw, Q. S. Liu, and B. Guo, Can relative paleointensities be determined from the normalized magnetization of the wind-blown loess of China?, J. Geophys. Res., 106, 19221–19232, 2001.

  18. Pan, Y. X., R. X. Zhu, Q. S. Liu, B. Guo, L. P. Yue, and H. N. Wu, Geomagnetic episodes of the last 1.2 Myr recorded in Chinese loess, Geophys. Res. Lett., 29, 1282, doi:10.1029/2001GL014024, 2002.

  19. Rutter, N. W., Z. L. Ding, M. E. Evans, and T. S. Liu, Baoji-type pedostratigraphic section, Loess Plateau, north-central China, Quat. Sci. Rev., 10, 1–22, 1991.

  20. Singer, B. S., K. A. Hoffman, A. Chauvin, R. S. Coe, and M. S. Pringle, Dating transitionally magnetized lavas of the late Matuyama Chron: Toward a new 40Ar/39Ar timescale of reversals and events, J. Geophys. Res., 104, 679–693, 1999.

  21. Spassov, S., F. Heller, M. E. Evans, L. P. Yue, and T. von Dobeneck, A lock-in model for the complex Matuyama-Brunhes boundary record of the loess/paleosol sequence at Lingtai (Central Chinese Loess Plateau), Geophys. J. Int., 155, 350–366, 2003.

  22. Sun, Y. B., J. Zhou, and Z. S. An, Geochemical characteristics of calcareous nodules in Lingtai eolian deposits, Geochimica, 29, 2000 (in Chinese).

  23. Tric, E., C. Laj, C. Jéhanno, J.-P. Valet, C. Kissel, A. Mazaud, and S. Iaccarino, High-resolution record of the Upper Olduvai transition from Po Valley (Italy) sediments: Support for dipor transition geometry?, Phys. Earth Planet. Inter., 65, 319–336, 1991.

  24. Yang, T. S., M. Hyodo, Z. Y. Yang, and J. L. Fu, Evidence for the Kamikatsura and Santa Rosa excursions recorded in eolian deposits from the southern Chinese Loess Plateau, J. Geophys. Res., 109, B12105, doi:10.1029/2004JB002966, 2004.

  25. Yang, T. S., M. Hyodo, Z. Y. Yang, and J. L. Fu, Three geomagnetic excursions from the middle Pleistocene loess-paleosol sediments near Baoji, southern Chinese Loess Plateau, Geochem. Geophy. Geosy, 2005 (in preparation).

  26. Zheng, H. B., T. Rolph, J. Shaw, and Z. S. An, A detailed paleomagnetic record for the last interglacial period, Earth Planet. Sci. Lett., 133, 339–351, 1995.

  27. Zhu, R. X., L. P. Zhou, L. Laj, A. Mazaud, and Z. L. Ding, The Blake geomagnetic polarity episode recorded in Chinese loess, Geophys. Res. Lett., 21, 697–700, 1994a.

  28. Zhu, R. X., C. Laj, and A. Mazaud, The Matuyama-Brunhes and Upper Jaramillo transitions recorded in a loess section at Weinan, north-central China, Earth Planet. Sci. Lett., 125, 143–158, 1994b.

  29. Zhu, R. X., Y. X. Pan, and Q. S. Liu, Geomagnetic excursions recorded in Chinese loess in the last 70,000 years, Geophys. Res. Lett., 26, 505–508, 1999.

  30. Zhu, R. X., B. Guo, Y. X. Pan, and Q. S. Liu, Study on the reliability of geomagnetic secular variations recorded in a loess section at Lingtai, North-central China, Sci. in China (D), 43, 1–9, 2000a.

  31. Zhu, R. X., B. Guo, Z. L. Ding, Z. T. Guo, A. Kazansky, and G. Matasova, Gauss-Matuyama polarity transition obtained from a loess section at Weinan, north-central China, Chinese J. Geophy., 43, 621–634, 2000b (in Chinese).

  32. Zhu, R. X., Q. S. Liu, and M. J. Jackson, Paleoenvironmental significance of the magnetic fabrics in the Chinese loess-paleosols since the last interglacial (<130 ka), Earth Planet. Sci. Lett., 221, 55–69, 2004.

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Correspondence to Tianshui Yang.

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Yang, T., Hyodo, M., Yang, Z. et al. A first paleomagnetic and rock magnetic investigation of calcareous nodules from the Chinese Loess Plateau. Earth Planet Sp 57, 29–34 (2005) doi:10.1186/BF03351803

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Key words

  • Calcareous nodule
  • loess
  • paleomagnetism
  • rock magnetism
  • magnetostratigraphy
  • polarity transition
  • Punaruu event